Twice in my jeep. The stall speed on the torque converter allows me to let go of the brake and the car won't move. Both times fricken idiot female drivers who weren't paying attention hit the gas and BAM! I leave my hitch on for this sole reason. No damage to my car. Neither girl even got out of their car. Just a ditsy "sooooory". Whatever, their front ends were usually in pieces laying on the street. I handed one lady her license plate as she was asking me "are you sure you don't want to call the police"? For some reason she didn't understand that calling the police would result in her getting a ticket, points and higher insurance.